staniforth



Feb. 3, 1942. 'A. v. STANIFORTH.

CHIMNEY, DUCT, AND THE LIKE Filed Aug. 12, 1941 Invert/ ar J1 lbu't .l'f'b'tanfiarth,

Patented Feb. 3, 194 2 t. V .rAlh'ert'Victor :tahifOrtli, P hiiiiliea tiqnAu%tf12, 19'

ea men v IifiGreatBfitain F ru ry-2,- 1-940 1 .-1-1 eaisei.

' xmg' er "s'uchfliningffianels since these must be.

ail-1244) f T ingto "the number df cover stripfs converging on or'running to said cla'iiips The'endsof'theeover strips .are reduced in thicknessto *engage'sunde'r the-armscr lugsof the'elamps."

efpreferred,constructi' n isillustrat edfon the I ornpanying drawing in "which:

f Fig s atragmenta'ry elevational 'ew of the ig. 2 is asectiona'fview'of; a fixing clamp, the l0 end portion of a cover barbeing indicated in n t dn s 4 1 i a 3 3a plan oftheclamp,

hrmlynke'dand'r herinoreithewholeofthe j *end'e leijationofacover'bar, joints between adj" entsenels 'must esevere d*6 show'in'elevationtwoformsof topreventgase armmeisturefrem re'a figthe and steel-chimneyplatesfahdleadingtof' 'Hitbfdie ithiis be? eusuai fii'atideifto use a breed meta1 strip :Which 'b'oth 'cb il er's the joints "between the bafielsfand also "secure "the ia'tter to the steel p etesyl'ef the c imney, studs or lci olts being located "at "suitable ihtrya'ls for thispurpose. v V c i" silence-tier stribshav towi'thstandcbffo'sion -arid erosiondue" to the in in'gi'teir ipe'ratures offthe egass and further more 'i'nust'hav'e a eertsmemeuht of "tlex b ty. All these iniper'ties are not 'found inthe relatii'rel'y inexpensive Inateiials J-L a nd would? be necessary to employ teieuveiy exne'nsi've resistant alloys; which unduly increases the c'cstfot the lining. One or the most; satisfactory materials would be cast iron since it is cheapian d is ire- Tsistantto corrosive anderosiy'e; action but it fcoiild not be used heretofore owing to its low tensilestrength, and-cover strips formed there- ;from would become broken and useless due to ii 's e e l bptr e pn a Wind w inv The principal object of the present invention i'is to provide an improved method of and rneans for securing pre formed liningpanels 'of a chimney 'or the like employing cast irongcover-strip; the construction allowing f0r;as1ight degree of ,mpyement without distorting the coverstrips.

In accordance with the present invention a.

chimney, or the like 'is provided with a lining in the for-m of separate panels and said panels are secured to the chinineycr like wall by means" of clamps located atsuccessivepoints and cover striipsf or bars which are engaged by said-clamps to; hold the panelsinposition andtov cover the joints between adjacent panels.

Preferably thesaid clarnps are also forrnedeot cast i n ans le e l et d Jet 1 e-Pil Wn Tvral v nes. 43 The. l-e-j eprqv de ewit "arins' snags on two,vthree or foursides accordois'turaacids spa-taryc g I I c .rn'earis of "tap"bolts er other'suit'able fastening ''a fragmentary sectional elevaticnal v I ratingthefapidlication of the invention toa'typicalchimney orstack.

As shown; in Fig la preferred lining for a 'chimney'forthe7like"according to the preSe'rit ine se's a"pluralityof "lining plates l 'b moulded or pressed pl'astic resistant I c held inj'liiosition by cover'bars 2 secured byclainp'sfi fixed to'the chiin'ney wall 'I'Z'by means. I 7

As'Ss'h'ofWnYin Figs- 2 "and 3 'the 'c'lani'ns "3-"are fermed et castir'on 'and are"b'rcadl-y of" square shape with 'affre'cs's "4 in' the upper fa-ce to take.

fthe ajdfser tapboltor the likewhich serves to Se 'reif the clampto the steel plates of the for lieelampfthat the se er, strips or bars "2 are d "tightly agaiii'st the lining'fpanels as' indiedfoniFig. '2 I v Iv'er strips or bars '2 are formed of cast 'ironalndare's'how 'morefclearly in Figs. 4 tot 6.

c r haped or'they may be of in- :v 'rte fv o'r channlis'ection. 'If desired trans- 'se webs BQIh'aYbe; 'p'roi ide'd' in the concave t of eam 7 cover 7 "strips to give additional .edgesfcf v rins jareicut:away'on'recessedto form a step-9 jwh'ichis ia'daptedto engage under the lugs 6 ohlthejclarnps, Preferably-an upwardly directed ill isifornie d on said-step, which rib dapt eq o fit-in theigap "1 between theypairs of lugs (ion the sides of --the elamps and thus prevent-lateral displacement or the cover strips,

Thefclan'ips '3 are'proiiided with lugs I rib; referred to hereinafter, on the cover l ieus sections, for example 7 efiigth said webs exten ng to near the lateral "cover strips. ,At eachend saidcover The part of said step engaged by the lugs is preferably enlarged or thickened on the upper face as shown at I i.

In the formation of a chimney lining in accordance with the present invention, the clamps 3 are located at the points where several panels I join; clamps having two or more sets of lugs being used according to whether there are two or more lines of joint to be covered. In the position indicated in Figs. 1 and 7, it is assumed that the clamp 3 is located at a point where four panels join, and such clamp is provided with lugs 6 on all four sides. Of course some of the joints may extend peripherally of the chimney and in such case the cover strips concerned would be curved to suit the configuration of the chimney as indicated on Fig. 6, while other lines of joint might extend vertically and straight cover strips, as shown in Fig. 5, would be used. Also if lengthy lining panels were used, one or more clamps could be disposed intermediately of a single line of joint, such clamps having lugs on two opposite sides only.

The lining plates may be bedded on a plastic coating layer and the cavity under the cover strips is also filled during assembly with a plastic filling compound to ensure complete sealing of the joints, while furthermore the recess 4 is filled with a plastic compound so that the head 5 of the bolt is protected.

It will be appreciated that the method described ensures a secure fixing of the lining panels and an efficient sealing of the joints but the expansion and contraction of the chimney does not lead to detrimental stressing of the clamps or cover strips owing to thearticulated or semi-free connection between these parts which allows a limited degree of free movement.

I claim:

1. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of lining panels within said structure, cast iron cover bars covering the joints between adjacent panels, clamps engaging said cover bars and means to secure said clamps to the aforesaid structure.

2. A chimney, duct or the like comprising a steel outer body, a plurality of resistant lining panels within said body, cast iron cover bars covering the joints between adjacent panels, clamps engaging the'ends of said cover bars and means to secure said clamps to the aforesaid outer body.

3. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of resistant lining panel within said structure, cast iron cover bars covering the joints between adjacent panels and holding the latter in position within the outer structure, clamps positioned adjacent the ends of a plurality of said cover bars, means on said clamps to engage the ends of said cover bars. and means to secure said clamps to the said outer structure.

4. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of resistant lining panels within said structure, cast iron cover bars to cover the joints between adjacent panels and to hold the latter in position, said bars. being cut away at the ends to form a step, clamps positioned adjacent the ends of a plurality of cover bars, lugs on said clamps to engage the steps formed on the ends of the cover bars and to force the latter against the lining panels to hold the said panels in position and means to secure said clamps to the aforesaid outer structure.

5. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of resistant lining panels within said structure, cast iron cover bars to cover the joints between adjacent panels and. to hold the latter in position, said bars being cut away at the ends to form a step, an upstanding rib midway of said step, clamps positioned adjacent the ends of a plurality of cover bars, lugs on said clamps to engage the steps formed on the ends of the cover bars, said lugs being disposed in pairs to leave a gap engageable by the aforesaid rib and means to secure said clamps to the aforesaid outer structure.

6. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of resistant lining panels within said structure, cast iron cover bars to cover the joints between adjacent panels and to hold the latter in position, said bars being of arcuate section and being cut away at each end to form a step, strengthening ribs within the arcuate parts of said bars, clamps positioned adjacent the ends of a plurality of coverbars, lugs on said clamps to engage the steps formed on the ends of the cover bars and to force the latter against the lining panels to hold the said panels in position, and means to secure said clamps to the aforesaid outer structure.

7. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of resistant lining panels within said structure, cast iron cover bars to cover the joints between adjacent panels and to hold the latter in position, clamps positioned adjacent the ends of a plurality of cover bars and adapted to engage the ends of said bars, said clamps being provided with a recess and means to secure said clamps to the aforesaid outer structure said fixing means being located within said recess and recess being filled, with a plastic resistant compound.

8. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of resistant lining panels bedded on a plastic resistant coating layer within said outer structure, cast iron bars covering the joints between adjacent lining panels, the cavities under said bars being filled with a plastic resistant coating layer, clamps engaging the ends of said cover bars and means to secure said clamps to the aforesaid structure.

, 9. A chimney, duct or the like comprising an outerstructure forming the chimney proper, a plurality of lining panels within said outer structure, cast iron cover bars covering the joints between adjacent lining panels, square shaped clamps positioned to come where the corners of several lining panels are located, lugs on some of the sides of said clamps to engage the ends of the cover bars and means to secure said clamps to the aforesaid structure.

10. A chimney, duct or the like comprising an outer structure forming the chimney proper, a plurality of curved lining panels within said outer structure, cast iron cover bars, some of which are curved and extend peripherally and others are straight and extend lengthwise to cover the joints between adjacent lining panels, clamps positioned to come where the corners of several lining panels abut and adapted to engage the ends of the cover bars and means to secure said clamps to the aforesaid structure.

11. A chimney, duct or the like comprising an outer structure formingthe chimney proper, a

2,272,138 I v v 7 Q3 plurality of curved lining'panels' within said outf er structure, cast iron cover bars formed to cover the joints-between adjacent liningpanels, said I panels and said bars being bedded on a plastic resistant coating layer, said barsbeing formed with a reduced step at each end, an upstanding rib associatedwith saidstep, clamps positionedpanels abut, pairs of lugs on the sides of said clamps to engage the ends of saidibars, saidup- ,standing-ribbeing positionedbetween the pairs I v of lugs and said clamp being provided with a deep recess,-a bolt for securing each clamp to the "1 said structure the headlthere'of being located in said rec'ess'and' a plastic resistant filling in said recess around the head of said bolt; at thepoints where the comers of several liningv J y 1 v I ALBERT VICTOR STANIFORTH. 9 

